19816280

素因数分解:

$2^3\times 5^1\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{1553}}^1$

素因数の和:1604

約数の個数: 64

約数和(自身を含む): 50349600

約数和(自身を除く): 30533320

約数列:

[1, 2, 4, 5, 8, 10, 11, 20, 22, 29, 40, 44, 55, 58, 88, 110, 116, 145, 220, 232, 290, 319, 440, 580, 638, 1160, 1276, 1553, 1595, 2552, 3106, 3190, 6212, 6380, 7765, 12424, 12760, 15530, 17083, 31060, 34166, 45037, 62120, 68332, 85415, 90074, 136664, 170830, 180148, 225185, 341660, 360296, 450370, 495407, 683320, 900740, 990814, 1801480, 1981628, 2477035, 3963256, 4954070, 9908140, 19816280]

約数ペア:

[(1, 19816280), (2, 9908140), (4, 4954070), (5, 3963256), (8, 2477035), (10, 1981628), (11, 1801480), (20, 990814), (22, 900740), (29, 683320), (40, 495407), (44, 450370), (55, 360296), (58, 341660), (88, 225185), (110, 180148), (116, 170830), (145, 136664), (220, 90074), (232, 85415), (290, 68332), (319, 62120), (440, 45037), (580, 34166), (638, 31060), (1160, 17083), (1276, 15530), (1553, 12760), (1595, 12424), (2552, 7765), (3106, 6380), (3190, 6212)]